Theodore martin



T. MARTIN.

(No Model.)

NUT LOGK.

Patented Sept. 19, 1893.

UNITED STATES PATENT OFFICE.

THEODORE MARTIN, OF WALLACEBURG, CANADA.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent No. 505,365, datedSeptember 19, 1893.

Application filed September 28, 1392- Serial No. 447,154. (No model.)Patented in Canada August 11 1892, No. 39,784.

To all whom it may concern:

Be it known that I, THEODORE MARTIN, a subject of the Queen of GreatBritain and Ireland, residing at Wallaceburg, in the county of Kent andProvince of Ontario, Canada, have invented a certain new and usefulDevice for Looking Nuts, (for which I have obtained a patent in Canada,No. 39,784., bearing date August 11, 1892,) for which the following is aspecification, reference being had therein to the accompanying drawings.

This invention relates generally to nut locks and particularly to thatclass thereof known as side key nut locks.

The objects of my invention are first to provide a device which can looka nut in a number of different positions and either on the square orbias, and secondly, to provide a device in which the locking key will besecurely held against displacement.

My invention therefore consists in a base washer having a series ofprojections arranged in pairs about its edges, and a locking key adaptedto rest between the nut and the above mentioned projections, one ofwhich is intended to hold the key against displacement While the otheris intended to be bent down upon the key to hold it against the nut.

My invention consists also in certain details of construction andcombination of parts all of which will be fully described hereinafterand pointed out in the claims.

In the drawings forming a part of this specification-Figure l is avertical sectional View of my improved nutlock as applied and used. Fig.2 is a detail view of the key decached. Fig. 3 is a view of a portion ofa washer showing the projection thereon. Fig. 4 is a plan view of awasher, having a flat face to rest upon the base of a rail. Fig. 5 is aplan view of another form of washer, and Fig. 6 shows a compound washerfor locking two nuts.

Referring to the drawings D indicates the bolt and O the nut both ofwhich are of the usual construction and the nut may be square orhexagonal as desired. A washer A is arranged beneath the nut C saidwasher being made of malleable iron and formed with upwardly projectinglugs BB at definite points about its periphery. Adjacent to each lug B,is a cubical boss H, said boss being of less height than the lugs B asclearly shown, and the boss is also much thicker. A lockingkey a isadapted to be placed between a lug and boss and one side of the nut O tohold said nut in place. projecting arms F F, to embrace the lug B andboss H, and it is also formed with arectangular seat E to receive theboss, and an in clined portion G, into which the lug B is forced to bindthe key tightly against the side of the nut. The boss Hwhich fits theseat E is intended to hold the key from longitudinal movement and thuskeep it always in its proper place. It will thus be seen that I securelybind the key against the nut and also hold said key from any movementwhatever. It will also be seen that by havinga plurality of lugs andbosses arranged in pairs 1 can lock the nut either when turned downsquare or on, the bias, and by means of the lock shown in Fig. 6 I amenabled to look a pair of nuts which secure the fish plates of twomeeting rails. The washer may also be formed with bottom protuberancesif desired which are set into the base plate and thus hold the washeragainst rotation. When it is desired to release the nut, the lug B isbent back, the key removed and the nut turned off.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a nut lock the combination with the nut and bolt, of a washer,having a series of vertically projecting lugs upon its edge, and a keyhaving arms at each end and an inclined portion between the arms uponwhich the lug is bent down substantially as shown and. described.

2. In a nut lock the combination with the bolt and nut of a washerhaving a series of lugs and bosses arranged in pairs and a key havingarms, an inclined portion and an angular seat to receive the bosssubstantially as shown and described.

. THEODORE MARTIN.

Witnesses:

C. B. JACKSON, HARRY MARTIN.

The key a is constructed with

